Improved spirit blow-pipe



PATENT OFFICE.

HORATIO"` N. MACOMBER, OF LYNN, MASSACHUSETTS.

IMPROV'EDV SPIRIT BLOW-PIPE.

Specitieationforming part of Letters Patent No. 147,403, dated March 11, 1856.

To @ZZ whom, t may concern: f

Be it known that I, HoRATIo N. MAconBER, of Lynn, in the county of Essex and State of Massachusetts, have invented an Improved Alcoholic or Spirit Blow-Pipe; and [do hereby declare that the same is fully described and represented in the following specification and the accompanying drawings, of which- Figure lis a front elevation ot' my improved blow-pipe apparatus. Fig. 2 is a vertical central and longitudinal section of the same.

In the drawings, A exhibits a boiler or va por-generator, which may have a'lamp, B, or other suitable means of heating it, arranged' underneath it. The said generator hasan orice, C, through which it may be supplied with alcohol whenever the same may be necessary,

the orifice being stopped bya screw-cap, c, at other times. Out ofthe upper part of each ot' the two oppssite ends of thegenerator A a pipe or hollow column, D or E, opens and extends upward, as seen in the drawings, the said pipe being closed at its upper end. Each pipe carries a vapor-jet, a, the twojets of the two pipesbeing arranged so as to point or stand in a direction toward each other.

Immediately below each ot` thejet-pipes is anotherjet-pipe, b, which may be termed the "lightingjet. It is provided where itopens out of the main pipe D or E with a very minute orifice, and its outer end, or place where the vapor is burned, is enlarged with respect to its injet-hole, so that the vapor entering the pipe may be consumed with such little velocity at the discharging-mouth that the flame ot' said vapor will rise into the current flowing out of the jet a directly over it. The object of the said lightingjet is to iniiame or maintain intiarned the powerful and rapid eurrent of vapor which may be driven out ofthe jet directly above it, and which, were it not for-such lighting-jet, would oftentimes become extinguished.

Axially into one of the main vapor-jets a there is inserted an air-jet tube, f, (see Fig. 2,) the same being `-extended through the upright pipe of said vapor-jet and having a Ilexible mouth tube or hose, g, applied to its outer end. By means of such jet-tube f and mouthtube g a person can readily blow air from his lungs into the inflamed vapor of the vaporjet, so as to reduce the same down to a sharppointed dame of great intensity, the oxygen of the air serving at the same time to promote combustion. A f

v I would remark that the yairjet tube is-so arranged within the vapor-jet that there is a space entirely around the air-jet, and between it and the inner surface'of the Vapor-jet, in order that the Vapor from the. generator may iiow into, through, and out of the vapor-jet, which is thus arranged concentrically with the j air-jet. A tubular or hollow stream will be discharged from the vapor-jet, and axially into said tubular stream airwill flow from the airjet, such an arrangement ofthe jets being very advantageous in facilitating combustion of the vapor. e

An alcoholic blow-pipe, as commonly constructed with a single jet, is often useful for heating, or what is termed warming up, a large surface on any article; but owing to the irregular action of the fiame or the difficulty l. Combining with the vapor-jet ol'a spirit 1 blow-pipe an air-jet,f, and a mouth-tube, y,

so applied to, said vaporfjet that air may be.

blown from the lungs of a person directly into the inflamed current of vapor of said vaporjet,in order to control, elongate, or reduce said current and increase its heating powers, as specified.

2. Arrangingthe air-jet co'ncentrically within the vapor-jet, as described, in order that the effluent current of airmay pass into a hollow tube or stream of vapor and flame.

3. Combining with each main jet -tube a lighting vapor-jet tube arranged so as to operate therewith, as specilied.

In testimony whereof I have hereunto set my signature this 18th day of January, A. D. 1856. Y

Witnesses:

R. H. EDDY, F. P. HALE, Jr.

HORATIO N. MACOMBER. 

